Provides better cable management. Requires no rack space, freeing up your rack for patch panels and other equipment. Protect cables from performance-robbing cinching and bending-secure and adjust cables easily with VELCRO fastening strips. Installs in minutes. No need to move panels. And you can use existing equipment screws. You can mount two Zero U-Height Cable Managers together. Just install the second unit upside down below the first. Also available in 1- and 2-packs.